A coalition of seven drug companies is working on a way to help low-income Medicare beneficiaries pay for their medicines when they hit the Part D coverage donut hole. The Bridge Rx plan would offer certain low-income beneficiaries at least 50% off their drugs during the gap when Part D does not cover them. Participants would have a co-pay of at least 15%, according to published reports. The government warned that such a program must include a broad range of drugs, including generics.